Home > CA > Contra Costa County > Walnut Creek > Zip 94598

Zip Code 94598 — Walnut Creek, CA

94598 is a ZIP Code associated with Walnut Creek, CA, located within Contra Costa. The postal region supports an estimated population of 27,206 residents across Data Pending housing units, with a population density of 509.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (37.892380, -121.982830)

Data MetricLocal Statistic
Postal / Zip Code94598
Primary CityWalnut Creek
State / ProvinceCA
CountyContra Costa
Total Population27,206
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density509.6 people/sq mi
TimezoneAmerica/Los_Angeles

How 94598 Compares

MetricZIP 94598Contra Costa CountyCA State Average
Population27,2061,171,36939,286,245
Median IncomeData PendingN/AN/A
Population Density509.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 94507Alamo2.9 mi14,586N/A
Zip 94596Walnut Creek2.9 mi23,417N/A
Zip 94528Diablo3.8 mi1,049N/A
Zip 94521Concord4.2 mi41,909N/A
Zip 94518Concord4.6 mi27,345N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →